Something to keep in mind is that Kardur will force all creatures under your opponent's control to attack if able, even if they entered the battlefield after Kardurs ability is triggered
Panoptic Mirror I, personally, have been a Panoptic Mirror enjoyer since it was originally printed back in Darksteel
Essentially resetting your deck (and your opponents) while leaving the board state as it is - a neat trick, and one that someone paid $84,000 for
Jeska's Will won't usually give you as much mana as Inner Fire, but with three opponents, you'll almost always be able to come out mana-positive
Instead of dealing damage, any damage Szadek would deal instead causes a player to mill that many cards, and then Szadek gets that many +1/+1 counters, doubling how many cards will be milled the next turn